function init(){
  element = $("photoverlay");
  value = 0.1;
  element.style.opacity = value;
  element.style.filter = 'alpha(opacity=' + value*100 + ')';
  
  element = $("ap12ul");
  value = 0.1;
  element.style.opacity = value;
  element.style.filter = 'alpha(opacity=' + value*100 + ')';

  element = $("ap3ul");
  value = 0.1;
  element.style.opacity = value;
  element.style.filter = 'alpha(opacity=' + value*100 + ')';
}

function hideAll(){
  node = $("main_photo");
  node.setStyle({visibility: 'hidden'});
  node = $("contacts");
  node.setStyle({visibility: 'hidden'});
  node = $("map");
  node.setStyle({visibility: 'hidden'});
  node = $("weather");
  node.setStyle({visibility: 'hidden'});
}

function showContacs(){
  hideAll();
  
  node = $("contacts");
  node.setStyle({visibility: 'visible'});
   
  element = $("infooverlay");
  value = 0.7;
  element.style.opacity = value;
  element.style.filter = 'alpha(opacity=' + value*100 + ')';
}

function showWeather(){
  hideAll();
  
  node = $("weather");
  node.setStyle({visibility: 'visible'});
   
  element = $("winfooverlay");
  value = 0.7;
  element.style.opacity = value;
  element.style.filter = 'alpha(opacity=' + value*100 + ')';
}

function showMap(){
  hideAll();
  
  node = $("map");
  node.setStyle({visibility: 'visible'});
}

function closeInfo(infoName){
  element = $(infoName);
  element.setStyle({visibility: 'hidden'});
  node = $("main_photo");
  node.setStyle({visibility: 'visible'});
}